./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:18:22,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:18:22,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:18:22,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:18:22,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:18:22,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:18:22,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:18:22,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:18:22,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:18:22,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:18:22,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:18:22,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:18:22,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:18:22,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:18:22,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:18:22,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:18:22,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:18:22,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:18:22,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:18:22,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:18:22,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:18:22,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:18:22,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:18:22,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:18:22,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:18:22,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:18:22,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:18:22,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:18:22,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:18:22,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:18:22,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:18:22,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:18:22,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:18:22,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:18:22,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:18:22,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:18:22,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:18:22,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:18:22,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:18:22,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:18:22,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:18:22,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:18:22,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:18:22,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:18:22,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:18:22,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:18:22,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:18:22,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:18:22,648 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:18:22,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:18:22,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:18:22,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:18:22,650 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:18:22,650 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:18:22,650 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:18:22,650 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:18:22,651 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:18:22,651 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:18:22,651 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:18:22,651 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:18:22,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:18:22,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:18:22,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:18:22,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:18:22,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:18:22,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:18:22,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:18:22,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:18:22,655 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:18:22,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:18:22,655 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:18:22,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:18:22,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:18:22,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:18:22,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:22,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:18:22,656 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:18:22,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:18:22,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:18:22,658 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:18:22,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:18:22,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:18:22,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:18:22,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2022-11-03 02:18:23,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:18:23,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:18:23,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:18:23,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:18:23,057 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:18:23,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-03 02:18:23,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/data/6c9b373d1/a4023c8df92f4364ac96d40cd82f6da8/FLAG98fac5d1c [2022-11-03 02:18:23,860 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:18:23,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2022-11-03 02:18:23,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/data/6c9b373d1/a4023c8df92f4364ac96d40cd82f6da8/FLAG98fac5d1c [2022-11-03 02:18:24,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/data/6c9b373d1/a4023c8df92f4364ac96d40cd82f6da8 [2022-11-03 02:18:24,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:18:24,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:18:24,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:24,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:18:24,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:18:24,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:24" (1/1) ... [2022-11-03 02:18:24,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f052b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:24, skipping insertion in model container [2022-11-03 02:18:24,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:18:24" (1/1) ... [2022-11-03 02:18:24,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:18:24,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:18:24,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-03 02:18:24,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:24,896 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:18:25,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2022-11-03 02:18:25,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:18:25,094 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:18:25,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25 WrapperNode [2022-11-03 02:18:25,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:18:25,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:25,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:18:25,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:18:25,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,257 INFO L138 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2022-11-03 02:18:25,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:18:25,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:18:25,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:18:25,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:18:25,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:18:25,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:18:25,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:18:25,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:18:25,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (1/1) ... [2022-11-03 02:18:25,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:18:25,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:25,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:18:25,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:18:25,456 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:18:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:18:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:18:25,457 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:18:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:18:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:18:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:18:25,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:18:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:18:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:18:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:18:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:18:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:18:25,459 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:18:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:18:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:18:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:18:25,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:18:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:18:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:18:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:18:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:18:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:18:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:18:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:18:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:18:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:18:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:18:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:18:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:18:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:18:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:18:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:18:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:18:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:18:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:18:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 02:18:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 02:18:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:18:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:18:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:18:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:18:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:18:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:18:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:18:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:18:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:18:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:18:25,470 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:18:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:18:25,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:18:25,737 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:18:25,740 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:18:26,780 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:18:27,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:18:27,297 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:18:27,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:27 BoogieIcfgContainer [2022-11-03 02:18:27,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:18:27,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:18:27,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:18:27,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:18:27,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:18:24" (1/3) ... [2022-11-03 02:18:27,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3540391e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:27, skipping insertion in model container [2022-11-03 02:18:27,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:18:25" (2/3) ... [2022-11-03 02:18:27,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3540391e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:18:27, skipping insertion in model container [2022-11-03 02:18:27,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:18:27" (3/3) ... [2022-11-03 02:18:27,313 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2022-11-03 02:18:27,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:18:27,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:18:27,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:18:27,437 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cb7b7a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:18:27,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:18:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-03 02:18:27,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:18:27,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:27,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:27,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash -988609598, now seen corresponding path program 1 times [2022-11-03 02:18:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429193670] [2022-11-03 02:18:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:27,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:27,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429193670] [2022-11-03 02:18:27,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429193670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:27,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:27,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:18:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921966406] [2022-11-03 02:18:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:27,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:18:27,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:18:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:27,967 INFO L87 Difference]: Start difference. First operand has 184 states, 108 states have (on average 1.3333333333333333) internal successors, (144), 112 states have internal predecessors, (144), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:28,085 INFO L93 Difference]: Finished difference Result 285 states and 370 transitions. [2022-11-03 02:18:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:18:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 89 [2022-11-03 02:18:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:28,099 INFO L225 Difference]: With dead ends: 285 [2022-11-03 02:18:28,099 INFO L226 Difference]: Without dead ends: 181 [2022-11-03 02:18:28,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:18:28,106 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:28,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-03 02:18:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-03 02:18:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:18:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 239 transitions. [2022-11-03 02:18:28,166 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 239 transitions. Word has length 89 [2022-11-03 02:18:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:28,168 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 239 transitions. [2022-11-03 02:18:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,168 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 239 transitions. [2022-11-03 02:18:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:18:28,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:28,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:28,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:18:28,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:28,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1945105561, now seen corresponding path program 1 times [2022-11-03 02:18:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084780032] [2022-11-03 02:18:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:28,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:28,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:28,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084780032] [2022-11-03 02:18:28,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084780032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:28,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:28,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:28,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143971340] [2022-11-03 02:18:28,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:28,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:28,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:28,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:28,499 INFO L87 Difference]: Start difference. First operand 181 states and 239 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:28,627 INFO L93 Difference]: Finished difference Result 281 states and 358 transitions. [2022-11-03 02:18:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:28,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2022-11-03 02:18:28,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:28,630 INFO L225 Difference]: With dead ends: 281 [2022-11-03 02:18:28,630 INFO L226 Difference]: Without dead ends: 183 [2022-11-03 02:18:28,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:28,633 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:28,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-03 02:18:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-03 02:18:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 108 states have (on average 1.2962962962962963) internal successors, (140), 111 states have internal predecessors, (140), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 02:18:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2022-11-03 02:18:28,652 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 90 [2022-11-03 02:18:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:28,653 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2022-11-03 02:18:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2022-11-03 02:18:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:18:28,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:28,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:28,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:18:28,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:28,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1064711004, now seen corresponding path program 1 times [2022-11-03 02:18:28,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:28,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700145593] [2022-11-03 02:18:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:28,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:28,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700145593] [2022-11-03 02:18:28,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700145593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:18:28,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:18:28,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:18:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510195074] [2022-11-03 02:18:28,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:18:28,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:18:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:18:28,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:18:28,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:28,831 INFO L87 Difference]: Start difference. First operand 183 states and 241 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:18:28,930 INFO L93 Difference]: Finished difference Result 396 states and 541 transitions. [2022-11-03 02:18:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:18:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-11-03 02:18:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:18:28,933 INFO L225 Difference]: With dead ends: 396 [2022-11-03 02:18:28,934 INFO L226 Difference]: Without dead ends: 231 [2022-11-03 02:18:28,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:18:28,936 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 57 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:18:28,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 431 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:18:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-03 02:18:28,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-11-03 02:18:28,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.3785714285714286) internal successors, (193), 143 states have internal predecessors, (193), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-03 02:18:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 316 transitions. [2022-11-03 02:18:28,959 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 316 transitions. Word has length 95 [2022-11-03 02:18:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:18:28,960 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 316 transitions. [2022-11-03 02:18:28,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:18:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 316 transitions. [2022-11-03 02:18:28,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:18:28,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:18:28,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:18:28,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:18:28,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:18:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:18:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1276490101, now seen corresponding path program 1 times [2022-11-03 02:18:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:18:28,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339095293] [2022-11-03 02:18:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:18:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:29,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:18:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339095293] [2022-11-03 02:18:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339095293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:18:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847301906] [2022-11-03 02:18:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:18:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:18:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:18:29,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:18:29,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:18:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:18:29,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:18:29,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:18:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:29,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:18:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:18:29,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847301906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:18:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1374201617] [2022-11-03 02:18:29,787 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-03 02:18:29,788 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:18:29,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:18:29,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:18:29,806 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:19:07,077 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:19:07,408 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-03 02:19:20,731 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:19:21,022 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-03 02:20:00,527 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-03 02:20:01,243 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-03 02:20:01,288 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-11-03 02:20:01,565 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-03 02:20:01,635 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-03 02:20:01,677 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-03 02:20:02,400 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 247 for LOIs [2022-11-03 02:20:02,442 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:20:16,954 WARN L234 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:23,772 WARN L234 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:06,403 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 566 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:12,638 WARN L234 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 568 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:19,080 WARN L234 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:25,307 WARN L234 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:31,627 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 571 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:37,935 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:00,779 WARN L234 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 530 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:08,064 WARN L234 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 569 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:05,262 WARN L234 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 581 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:13,815 WARN L234 SmtUtils]: Spent 7.84s on a formula simplification. DAG size of input: 589 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:35,781 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 443 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:23:55,859 WARN L234 SmtUtils]: Spent 14.12s on a formula simplification. DAG size of input: 640 DAG size of output: 509 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:07,165 WARN L234 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 637 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:29,438 WARN L234 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 673 DAG size of output: 473 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:32,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1374201617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:32,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:24:32,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [4, 4, 4] total 69 [2022-11-03 02:24:32,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578223579] [2022-11-03 02:24:32,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:32,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-03 02:24:32,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-03 02:24:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=4452, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 02:24:32,645 INFO L87 Difference]: Start difference. First operand 226 states and 316 transitions. Second operand has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-03 02:25:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:31,545 INFO L93 Difference]: Finished difference Result 643 states and 949 transitions. [2022-11-03 02:25:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-03 02:25:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 96 [2022-11-03 02:25:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:31,552 INFO L225 Difference]: With dead ends: 643 [2022-11-03 02:25:31,553 INFO L226 Difference]: Without dead ends: 435 [2022-11-03 02:25:31,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 221 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 291.7s TimeCoverageRelationStatistics Valid=303, Invalid=5703, Unknown=0, NotChecked=0, Total=6006 [2022-11-03 02:25:31,556 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 288 mSDsluCounter, 7306 mSDsCounter, 0 mSdLazyCounter, 9465 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 7412 SdHoareTripleChecker+Invalid, 9521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 9465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:31,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 7412 Invalid, 9521 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [56 Valid, 9465 Invalid, 0 Unknown, 0 Unchecked, 36.4s Time] [2022-11-03 02:25:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-03 02:25:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 352. [2022-11-03 02:25:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 235 states have (on average 1.4085106382978723) internal successors, (331), 239 states have internal predecessors, (331), 84 states have call successors, (84), 33 states have call predecessors, (84), 32 states have return successors, (84), 81 states have call predecessors, (84), 83 states have call successors, (84) [2022-11-03 02:25:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 499 transitions. [2022-11-03 02:25:31,717 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 499 transitions. Word has length 96 [2022-11-03 02:25:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:31,717 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 499 transitions. [2022-11-03 02:25:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 40 states have internal predecessors, (49), 19 states have call successors, (20), 12 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-03 02:25:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 499 transitions. [2022-11-03 02:25:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:25:31,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:31,721 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:31,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:25:31,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 02:25:31,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2145474438, now seen corresponding path program 1 times [2022-11-03 02:25:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775969286] [2022-11-03 02:25:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:25:32,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:32,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775969286] [2022-11-03 02:25:32,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775969286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:32,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:32,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886533434] [2022-11-03 02:25:32,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:32,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:32,076 INFO L87 Difference]: Start difference. First operand 352 states and 499 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:25:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:32,424 INFO L93 Difference]: Finished difference Result 818 states and 1204 transitions. [2022-11-03 02:25:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 101 [2022-11-03 02:25:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:32,429 INFO L225 Difference]: With dead ends: 818 [2022-11-03 02:25:32,429 INFO L226 Difference]: Without dead ends: 492 [2022-11-03 02:25:32,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:32,431 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 55 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:32,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 442 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-11-03 02:25:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 485. [2022-11-03 02:25:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 343 states have (on average 1.4810495626822158) internal successors, (508), 347 states have internal predecessors, (508), 109 states have call successors, (109), 33 states have call predecessors, (109), 32 states have return successors, (109), 106 states have call predecessors, (109), 108 states have call successors, (109) [2022-11-03 02:25:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 726 transitions. [2022-11-03 02:25:32,629 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 726 transitions. Word has length 101 [2022-11-03 02:25:32,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:32,630 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 726 transitions. [2022-11-03 02:25:32,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:25:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 726 transitions. [2022-11-03 02:25:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:25:32,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:32,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:32,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:25:32,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash 975923164, now seen corresponding path program 1 times [2022-11-03 02:25:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:32,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573366563] [2022-11-03 02:25:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:32,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:25:32,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:32,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573366563] [2022-11-03 02:25:32,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573366563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116262084] [2022-11-03 02:25:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:32,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:32,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:32,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5033c0c0-d07a-49fc-a4b7-f2c9aa5c596d/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:25:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:33,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:25:33,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:25:33,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:25:33,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116262084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648887894] [2022-11-03 02:25:33,264 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-03 02:25:33,264 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:25:33,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:25:33,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:25:33,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:26:08,303 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:26:08,653 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 474 for LOIs [2022-11-03 02:26:21,203 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:26:21,490 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 469 for LOIs [2022-11-03 02:27:26,989 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-03 02:27:27,760 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 247 for LOIs [2022-11-03 02:27:27,805 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 444 for LOIs [2022-11-03 02:27:28,119 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 245 for LOIs [2022-11-03 02:27:28,198 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-03 02:27:28,242 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-03 02:27:29,003 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 439 for LOIs [2022-11-03 02:27:29,297 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-11-03 02:27:29,338 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:27:43,305 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:49,696 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:27,938 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 566 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:34,028 WARN L234 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 568 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:39,915 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 569 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:45,823 WARN L234 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:51,848 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 571 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:57,721 WARN L234 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 567 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:19,223 WARN L234 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 530 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:24,823 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 566 DAG size of output: 302 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:10,466 WARN L234 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 571 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:23,208 WARN L234 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 581 DAG size of output: 412 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:31,816 WARN L234 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 589 DAG size of output: 420 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:53,603 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 443 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)